#!/usr/bin/env python
#-*- coding: utf-8 -*-
#__author__:vincentlc
#time: 16/4/5 : 23:48

'''
Write an algorithm to determine if a number is "happy".

A happy number is a number defined by the following process: Starting with any positive integer, replace the number by the sum of the squares of its digits, and repeat the process until the number equals 1 (where it will stay), or it loops endlessly in a cycle which does not include 1. Those numbers for which this process ends in 1 are happy numbers.

Example: 19 is a happy number

1^2 + 9^2 = 82
8^2 + 2^2 = 68
6^2 + 8^2 = 100
1^2 + 0^2 + 0^2 = 1
'''
class Solution(object):
    def isHappy(self, n):
        """
        :type n: int
        :rtype: bool
        """
        result = n
        i = 0
        for i in range(30):
            tmp = 0
            for i in str(result):
                tmp  += int(i)**2
            result = tmp
            if result == 1:
                return True
        return False

a = Solution()
test_number = 83
if a.isHappy(test_number):
    print("is happy")
else:
    print("unhappy")
